River wash gravel is placed in the drain line trench to aide in water stream. Then we install Polydrain, an air-gap technology drainage board in the cove place where the base wall meets the basement floor. This heavy duty built drainage matting is bent and placed the wall up and above the trench. It increases water drainage and leads intruding water due to hydrostatic pressure to the subgrade tile system. After the installation of this Polydrain the trench is sealed using commercial grade concrete.
McLean Interior Basement Waterproofing solutions can also include wall systems. Alternatives are a 6 mil polyethylene vapor barrier which is tucked into the Polydrain and installed typically from floor to ceiling. It is not difficult to wash, 100% waterproof and doesn’t support mold, mildew or bacteria development. For wall areas with high water content, such as corners, problem areas or older construction, Polydrain can be installed complete wall or chest high. There are also commercial grade epoxy and polymeric acrylic coatings available.